Mekki I. auteur aut IRD Zitouna Chebbi R. auteur aut IRD Jacob Frédéric auteur aut IRD Masmoudi M. auteur aut IRD Prévot L. auteur aut IRD Ben Mechlia N. auteur aut IRD Voltz M. auteur aut IRD Albergel Jean auteur aut IRD text journalArticle eng text/pdf reformatted digital access In semiarid agrosystems, improving management of soil and water resources requires developing reliable means for characterizing the temporal dynamics of soil water balance in a spatially distributed manner. The purpose of this study is to analyze soil water balance in relation to natural drivers (i.e. rainfall and soil properties) and anthropogenic forcing (i.e. land use and crop successions). We focuson a hilly watershed devoted to rainfed agriculture, so-called the Kamech watershed, which is located in the Cap Bon Peninsula, north-eastern Tunisia. The soil moisture analysis is based on in-situ data collected in different fields and during various crop growth cycles under the common cereals/legumes/pasture cropping systems. In-situ data include water balance components and vegetation parameters. The results show that annual rainfall is mainly converted into evapotranspiration during the growing cycle for different land uses. The runoff amounts, for most of the sites, correspond to less than 10% of the rainfall amount. The evapotranspiration ratio significantly differs in relation to soil properties and cumulated rainfall. We observe large differences in soil water dynamics among the legumes (fababean and chickpea) and cereals (wheat, oat, and triticale). Soil water is larger for legume crops, despite substantial plant growth during winter-spring. This is ascribed to the shallow root systems of fababean and chickpea that induces a restricted access to deep water. Despite drought conditions during summer, bare soil following annual pasture and legumes corresponded to larger amounts of soil water as compared to cereals. The amount of available water observed ranges from 0 mm to nearly 100 mm. specialized BILAN HYDRIQUE EAU DU SOL UTILISATION DU SOL SYSTEME DE CULTURE CULTURE RESSOURCES EN EAU RESSOURCES EN SOL PLUIE HUMIDITE DU SOL PRECIPITATION VARIATION ANNUELLE EVAPOTRANSPIRATION RUISSELLEMENT BASSIN VERSANT COLLINE GESTION DE L'EAU TUNISIE 072AGRMET02 068PROSOL 35 No spécial 769-775 2014 0330-7956 Aridoculture et Cultures Oasisennes : Gestion des Ressources et Applications Biotechnologiques en Aridoculture et Cultures Sahariennes : Perspectives pour un ; Développement Durable des Zones Arides : Meeting International, 4., Djerba (TUN), 2013/12/17-19 https://www.documentation.ird.fr/hor/fdi:010076325 0330-7956 [F B010076325] https://www.documentation.ird.fr/hor/fdi:010076325 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers19-07/010076325.pdf IRD - Base Horizon / Pleins textes 2019-07-19 2020-03-05 fdi:010076325 fre